In water, these molecules spontaneously align â with their heads facing outward and their tails lining up in the bilayer's interior. Thus, the hydrophilic heads of the glycerophospholipids in a cell's plasma membrane face both the water-based cytoplasm and the exterior of the cell.
An MRI (magnetic resonance imaging) scan is an imaging test that uses powerful magnets and radio waves to create pictures of the body. It does not use radiation (x-rays). Single MRI images are called slices. The images can be stored on a computer or printed on film.
Magnetic resonance imaging (MRI) of the head is a painless, noninvasive test that produces detailed images of your brain and brain stem.The test is carried out with an MRI machine, which produces the images using a magnetic field and radio waves.This test is also known as a brain MRI or a cranial MRI.The test will be carried out at a hospital or radiology center. An MRI is different from a computed tomography (CT) scan or an X-ray in that it does not use radiation to produce images.The images can be combined to form a 3-D picture of your internal structures, so the MRI is more effective than other scans at detecting abnormalities in the pituitary gland and brain stem.his test is also known as a brain MRI or a cranial MRI. The test will be carried out at a hospital or radiology center. An MRI is different from a computed tomography (CT) scan or an X-ray in that it does not use radiation to produce images.